Multiple Meshes Sharing 1 UV space
You can achieve this effect by creating and texturing your wall before splitting it up into different pieces.

After you created your wall you can use the cell fracture add-on to break your wall down. For smashing your wall with a wreckingball this would create the desired effect.

For an in-depth tutorial of this method see the youtube vid made by CG Geek:
https://www.youtube.com/watch?v=XUUi2AdLtmk

Good luck.